Tissue stabilizer having an articulating lift element

Abstract

Devices and methods are disclosed for stabilizing tissue within a patient's body during a surgical operation to provide a relatively motionless surgical field, such as during a coronary artery bypass graft procedure. The devices include tissue stabilizers which engage and provide stabilization to a targeted area of tissue and further have the ability to engage and manipulate some portion of tissue within or adjacent the targeted area to improve the surgical presentation of that portion of tissue. The tissue stabilizer typically has one or more stabilizer feet which have a first foot portion configured to provide stabilization to the targeted tissue and a second foot portion moveable relative to the first foot portion for manipulating a portion of tissue to improve the surgical presentation.

Description

FIELD OF THE INVENTION [0001] The present invention relates generally to surgical instruments, and more particularly to devices and methods for stabilizing and manipulating tissue during surgery. The tissue stabilizers described herein are particularly useful for stabilizing the beating heart during coronary artery bypass graft surgery. The field of the invention is cardiac tissue stabilizers having specially designed moveable portions. BACKGROUND OF THE INVENTION [0002] Certain surgical procedures require the surgeon to perform delicate operations on tissues within the body that are moving or otherwise unstable. For example, a large and growing number of surgeons are routinely performing successful coronary artery bypass graft surgery on the beating heart. In a typical coronary artery bypass graft (CABG) procedure, a blocked or restricted section of coronary artery, which normally supplies blood to a portion of the heart, is bypassed using a source vessel or a graft vessel to re-es...

AI Technical Summary

Benefits of technology

The present invention is a tissue stabilizer for use during surgical procedures on the heart, specifically for CABG surgery. The stabilizer has one or more stabilizer feet that engage the heart tissue and a tension member that can be pulled or operated to manipulate the tissue. The stabilizer feet have a first portion that engages the tissue and a second portion that is moveable relative to the first portion. The second portion can be manipulated to stabilize the tissue surrounding the target artery. The stabilizer feet can be textured or have a vacuum chamber for better engagement with the tissue. The invention can be used for other surgical procedures as well.

Problems solved by technology

Forming in anastomosis between two vessels in this manner is a particularly delicate procedure requiring the precise placement of tiny sutures in the tissue surrounding the in the coronary artery and in the source or graft vessel so that the two may be sutured together.

While a properly stabilized vessel will usually exhibit acceptable visualization, some operations and tissue geometries can distort the tissue surrounding the coronary artery or the coronary artery itself in a manner which (complicates the completion of the anastomosis.

In such cases, the stabilization forces alone can do little to optimize the visualization and presentation of the target artery.

When the arteriotomy is not optimally presented, there is a higher likelihood of incurring a surgical error in the formation of the anastomosis.

If the vessel is flattened, for example, it becomes more likely for the surgeon to accidentally catch the back wall of the vessel with the curved suture needle as the suture is placed in the tissue surrounding the arteriotomy.

When the vessel is compressed side to side, it becomes more difficult to catch only the desired side of the arteriotomy without also catching the other side.

The surgeon must be careful to only manipulate the vessel at the outside edges of the incision as manipulation to the interior of the vessel wall may cause damage to the soft intimal layer of the vessel leading to scarring and often late restenosis.

Even in the best of circumstances this manual manipulation of the vessel to facilitate each suture placement is tedious, time consuming, and increases the likelihood of vessel damage.

This problem will become even more magnified as surgeons move to manual, computer-assisted, and robotic endoscopic procedures in which the surgeons will be attempting to complete anastomotic procedures in remote and difficult places.

Delicate manipulation of the vessel walls while suturing becomes increasingly difficult as the surgeon becomes further removed from the surgical site by longer instruments, the size of the surgical site decreases leaving inadequate space to accommodate multiple instruments, and the access incisions become smaller thus limiting instrument maneuverability.

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